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Modification of chitosan by p-t-butylcalix[4]arenes has been conducted using a nucleophilic subtitution reaction between chitosan, p-t-butylcalix[4]arenes and N,N-diisopropyl carbodiimide (DIC) in reagent dichlorometane at room temperature and under nitrogen atmosphere. Analysis structure of the chitosan-p-t-butylcalix[4]arenes is determined with spectrophotometer Fourier Transform Infra Red (FTIR) and X-ray diffraction. The melting point, surface area and morphological analysis are also conducted on the prepared materials. The prepared chitosanp-t-butylcalix[4]arenes is white brown powder with melting point of 238 oC. The FTIR spectrum shows a peak at 3346.50 cm -1 that indicates the presence of the N-H bonds of secondary amine. The diffraction patterns shows the presence of charge and shift in 2θ.It indicates that the modification proceed successfully. The result of surface area analysis shows that chitosan-p-t-butylcalix[4]arenes is macroporous material with average of pore radius of 673.6 A and the surface area of 16.352 m 2 /g. SEM analysis shows that chitosan-p-t-butylcalix[4]arenes also confirm that the materials has porous surface.

Modification and Characterization a New Polymer Chitosan-p-t-butylcalix[4]arenes